Data are collected at baseline, month 1 and at month 4, namely 3 months after the end of the training programme thanks to the Apathy Inventory Clinician version (AI-C), the Neuropsychiatric Inventory for the staff members (NPI-ES), the AD QOL, an Observation Scale and a qualitative analysis of the official caregiver's knowledge and perception about BPSD especially apathy and their expectations concerning the training program.